Three-wheeled skateboard



FIG. 1 is a right side elevational view of the three-wheeled skateboard showing my new design;

FIG. 2 is a left side elevational view thereof,

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a front elevational view thereof. 

The ornamental design for the three-wheeled skateboard, as shown and described. 